Appcircle DescriptionUpdate README.md

[boztopuz]

Thanks for your contribution! This is a template that can make it easier when submitting your contribution:

Your Project: Appcircle
Project URL: https://appcircle.io/
Category: Mobile DevOps
Description: Correction of Appcircle Description

Inclusion requirements:

• [ ] Has 50 GitHub stargazers or more
• [x] Only one project/change is in this pull request
• [x] Isn't an archived project
• [ ] Has more than one contributor
• [ ] Has unit tests, integration tests or UI tests
• [ ] Addition in alphabetical order (bottom of category)
• [x] Supports iOS 12 / tvOS 10 or later
• [x] Supports Swift 4 or later
• [ ] Has a commit from less than 2 years ago
• [ ] Has a clear README in English

:heart: Awesome iOS Contributors

[vsouza]

@boztopuz Thanks for contributing!